Steroidal aromatase inhibitor can inhibit the aromatase activity, interdict the reaction, and inhibit the estrogen formation, so that it can cure the breast cancer.

• 甾体芳香酶抑制剂能抑制芳香酶活性,阻断芳构化反应,抑制雌激素生成,从而达到治疗乳腺癌的目的。